I've found a superb new site dedicated to Green Matcha Tea (which you can get to from the link just here).
It's probably one of the most detailed in terms of health benefits of this amazing tea that I have found. One of the key things that Matcha brings is a stack of very powerful antio-oxidants and these Guys have just published a superb article on that very subject.
In the piece they go into some detail about how Matcha Tea Anti Oxidants work and how they are some of the most powerful you can get. Just one of the facts they mention is that Green Tea and Matcha in particular has more (and better) anti-oxidants than both Blueberries and Pomegranate - two of the accepted best sources of these life giving chemicals.
I won't go in to any further detail here save suggest you check the article out by clicking the link below.
Anti Oxidants In Matcha Green Tea